Hello all,
I use these solid state
relays, as well, and they are great!
One thing to be aware
of I'm told, as I've never experienced it myself, there is a
small amount of leakage thru the switching transistor inside the
SSR.? When using HV supplies, this -could- put a few hundred
volts on the output of a 'turned off' power supply.? Don't need
any surprises.
-Go Drake-
73 de Steve NR4M
On 5/6/2024 7:24 PM, Rick W4XA wrote:
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I think either are fine of course...
I found a seller on eBay that was selling those 240A45's for about
$10 each (new old stock) I couldn't pass them up!? so I bought 6
of them!
Then I found a different seller with the 240A25's for about the
same price so I grabbed them too!?
On another completely unrelated note, I have a Viking Valiant that
has a REALLY clunky DC powered relay that is activated by the PTT
line.? EF Johnson thought it a good idea to key the finals by
keying the actual plate transformer AC!? (and other stages with a
separate set of contacts)
The relay uses about 200V DC and that 200V is on the PTT line in
the microphone. (really safe huh?)
I'm changing that one to an SSD also? (already have low voltage DC
in there for a T/R relay so I'll use it!)
I love these SSD's!
Their only problem is cost if you have to buy them new at retail.?
Mouser gets about $82 for new Opto22 240A45 SSR's......? and
Digikey gets about $80 for the 240A25 models.
It probably wouldn't be worth it if I had to pay retail for them.
--
73/Rick
W4XA
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